Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c5e57e8e140690…

MALICIOUS

PDF

45.6 KB Created: 2020-08-01 23:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 584b8bcea96ef9d564b7cadcbde7f870 SHA-1: 7510b72fe8580a3e0bf59bca5904bbcebe0234cd SHA-256: 94c5e57e8e140690fc540e0c55c5f25b223bb97ddb8e841a3f1a177a9226795e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, indicating a link farm or SEO manipulation tactic. One of these links, https://ttraff.ru/pify?keyword=the+jig+is+up+lyrics, redirects to known malicious infrastructure. The document body itself is largely unreadable binary data, but the presence of the malicious redirector URL is a strong indicator of malicious intent.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=the+jig+is+up+lyrics
    • http://files.remeretreats.org/uploads/1/3/2/3/132303019/jewako.pdf
    • http://files.trytank.org/uploads/1/3/0/9/130969986/votavivuzete_dadonorafe.pdf
    • http://files.hartshillandharpfieldsra.org/uploads/1/3/0/7/130776150/1185917.pdf
    • http://files.ajcookfans.com/uploads/1/3/0/7/130775403/folusaval.pdf
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/99724532075.pdf
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/29361558083.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/polufilumixerezewuzebo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78491346320.pdf
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/jupodelexojipuvomozu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/70540429615.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/84204855421.pdf
    • https://cdn.shopify.com/s/files/1/0441/3282/7288/files/38431394512.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/66562651161.pdf
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/darujodubu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/gimuxajumas.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d7e.bin
f88087349017b70f441bbe4e3030f70bb8135cca1e0dfc83616e7d24305d1b2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7E 5112 bytes
font_01_sfnt_off00007ef6.bin
425f66cf5c9b4c0e5466def3ce7dd915f589f55a816de4a8c0df9b9a1cb0aaa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF6 13400 bytes

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